[sdiy] Envelope follower w/ control voltage proportional to perceived loudness?

[Jason Proctor]

#pragma knee_jerk_reaction

patch the output of the follower to both the input and the CV input 
of an exponential VCA



>I am trying to use a guitar to generate a control voltage that is 
>proportional to the *perceived* loudness of the sound, not the 
>actual voltage envelope itself.  Would it make sense to try using a 
>log converter after the envelope follower to get an overall voltage 
>response closer to what the ear hears?  Has anyone tried using a 
>linear-to-log converter after their envelope followers to generate a 
>control voltage for this purpose?  I was thinking a circuit with 
>matched transistors such as is used in analog synthesizers to make 
>1V/Octave response.  Would this work?
>
>thanks,
>Dave
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